[JIRA] (OVIRT-1756) configure jenkins.ovirt.org to G1 garbage collector

[Barak Korren (oVirt JIRA)]

     [ https://ovirt-jira.atlassian.net/browse/OVIRT-1756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Barak Korren updated OVIRT-1756:
--------------------------------
    Component/s: oVirt CI
      Epic Link: OVIRT-403
     Issue Type: Improvement  (was: By-EMAIL)

> configure jenkins.ovirt.org to G1 garbage collector
> ---------------------------------------------------
>
>                 Key: OVIRT-1756
>                 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1756
>             Project: oVirt - virtualization made easy
>          Issue Type: Improvement
>          Components: oVirt CI
>            Reporter: rgolanbb
>            Assignee: infra
>
> I noticed jenkins process cpu consumption going over 100% and stalling the
> web handlers. The io wait is not a problem nor mem.
> What I suspect is going on is tons of GC and GC pressure given that 12GB
> heap and fairly nice amount of users and requests.
> What we can do is to configure the gc logging to see if that is really GC
> pauses really and to move to using the G1 garbage collector.
> See this post from cloudbees on the move to G1 collector
> https://www.cloudbees.com/blog/joining-big-leagues-tuning-jenkins-gc-responsiveness-and-stability



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